I don't see the change of a doctrine in the US--simply no military cultural DNA required for it.
It is in the political top which, as we all saw, is corrupted to the core with deluded idiocy of supremacy based on ... nothing. In the end, as I repeat ad nauseam--war is a cultural affair, always was, always will be. Those in the US military who get it, like Daniel Davis, they are not allowed anywhere near political influence required for reshaping the US military in what it is supposed to be--a strong but compact Army whose main focus should be on defense of the US proper, and powerful enough Navy capable to "unlock" critical chokepoints in Atlantic and Pacific. The idiocy of "power projection" based on obsolete carrier airpower, which also bankrupts the US, is not the way to go. Missile weaponry is not waiting to US Navy's air defense to catch up.